tcp/udp 추가, todo:iocp openssl 지원하도록 업데이트하기

include/socket/udp_socket.h

@@ -0,0 +1,45 @@
+#pragma once
+#include "address.h"
+
+namespace Socket {
+
+struct Address;
+
+class UDPSocket {
+ public:
+  UDPSocket() = default;
+  UDPSocket(int domain, int type, int protocol);
+  ~UDPSocket();
+
+  int init(int domain, int type, int protocol);
+  void destruct();
+
+  operator SOCKET();
+  void set(const SOCKET __sock, int __domain);
+  int setsockopt(int level, int optname, const char* optval, int optlen);
+
+  int bind(Address __addr);
+
+  int recvfrom(void* __restrict __buf, size_t __n, int __flags,
+               struct Address& __addr);
+  int sendto(const void* __buf, size_t __n, int __flags, struct Address __addr);
+
+  UDPSocket(const UDPSocket&);
+  UDPSocket(UDPSocket&&) noexcept;
+  UDPSocket& operator=(const UDPSocket&);
+  UDPSocket& operator=(UDPSocket&&) noexcept;
+
+  struct Address bindAddr = {};
+  struct Address remoteAddr = {};
+
+  int domain = 0;
+  SOCKET sock = INVALID_SOCKET;
+
+  std::mutex readMutex;
+  std::mutex writeMutex;
+
+ protected:
+  bool valid_ = false;
+};
+
+}  // namespace Socket